Fiberglass Pipe Fittings – FRP 90 degree elbow
We are a professional manufacturer of Fiberglass Pipe Fittings – FRP 90 degree elbow in China
What is FRP?
FRP,known as Fibre-reinforced plastic, also called fibre-reinforced polymer,is a composite material made of a polymer matrix reinforced with fibres. The fibres are usually glass (in fibreglass), carbon (in carbon-fibre-reinforced polymer), aramid, or basalt. Rarely, other fibres such as paper, wood, boron, or asbestos have been used. The polymer is usually an epoxy, vinyl ester, or polyester thermosetting plastic, though phenol formaldehyde resins are still in use.
What is Fiberglass?
Fiberglass is a material that is made by melting spinning glass. The process produces glass fibers, which can be used by themselves or combined with other materials for use in various applications. In the latter case, the glass fibers are utilized as a reinforcement material. The glass fiber provides the dominating mechanical properties to make the base material, which can be a liquid polymer, metal, or ceramic, into a stronger composite material.
An FRP (Fiberglass Reinforced Plastic) elbow is a specialized pipe fitting designed to change the direction of flow in corrosion-resistant piping systems. Made from high-strength fiberglass and resin, FRP elbows are widely used in industries where corrosion, chemical resistance, and lightweight materials are essential.
GRP (Glass-Reinforced Plastic): This term specifically refers to FRP where the reinforcing fibers are made of glass.
GRP pipe fittings is to satisfy the different types of joint of pipe or pipeline, we also can produce many kinds of GRP flanges, tees, elbows, reducers, GRP branches, FRP saddles, GRP manholes and other fittings to meet the different standards, such as domestic GB, HG, or international standards such as DIN, JS, ASTM etc. As customer’s demand.
The composition of FRP
Plastic resins are used as binding agents to hold the glass fibers to the structural layers of FRP. These resins can also contain many different properties, such as fire and corrosion resistant qualities. FRP is manufactured in a 3-layer lay-up process and these FRPs, called laminates, are made up of the following components
Structural layers
The foundation that gives the composite its strength and structural integrity, as well as its temperature resistance.
Chemical barrier layer
This layer gives FRP its signature chemical resistance, giving it the highest durability against corrosive agents.
Surface protection layer
Depending on the purpose for which the product is manufactured, this layer gives it resistance to the environment. It also adds an additional layer of temperature resistance.
The most outstanding features of this unique composite material are its strength, durability and ability to adapt to any environment.
Character of our FRP Pipe fittings.
- Manufactured to conform to PS 15-69 & ASTM D6041
- 90oElbow radius equals to 2 times of the Inside Diameter for sizes not larger than 3 inches, and 1.5 times of the Inside Diameter for sizes for 4 inches and larger
- Standard inventory available in Vinyl Ester Resin, Derakane Momentum 411-350, 470-300, 510C-350 & Hetron 922. To supply equivalent resin system can be available upon request
ASTM D6041
Standard Specification for Contact-Molded “Fiberglass” (Glass-Fiber-Reinforced Thermosetting Resin) Corrosion Resistant Pipe and Fittings
Applications of FRP Elbows
FRP (Fiberglass Reinforced Plastic) elbows are widely used in corrosive, high-moisture, and chemically aggressive environments where traditional metal fittings fail due to corrosion, rust, and chemical degradation. Their lightweight, durability, and chemical resistance make them ideal for various industries.
Applications of FRP Elbows:
Chemical Processing Plants – Handling corrosive chemicals and acids
Water & Wastewater Treatment – Corrosion-resistant pipelines
Oil & Gas Industry – Transporting seawater, crude oil, and chemicals
Power Plants – Cooling water, scrubbers, and exhaust systems
Marine & Desalination Plants – Saltwater-resistant piping networks
